Waveshare® LD3320 Voice Recognition Module Non-specific Vocal Sound Control Development Board

Overview Support non specific voice recognition module with SPI interface and parallel interface onboard microphone and active crystal oscillator which is convenient to realize voice recognition voice control and human machine dialogue function in electronic products Characteristic High accuracy and practical voice recognition effect Non specific person speech recognition technology does not require users to perform recording training Dynamically editable list of recognized keywords only need to transfer the recognized keywords to the chip in the form of character strings which can take effect immediately in the next recognition For example in the programming of 51 and other MCUs users simply set the register of the chip and dynamically import the content of identifying keywords such as Hello into the chip and the chip can recognize such set keywords Support users to freely edit 50 keywords at the same time they can be identified in 50 keywords and end users can edit and update the content of these 50 keywords at any time according to the needs of the scene Parameter Working voltage 3 3V must use 3 3V level single chip microcomputer to drive Built in mono mono 16 bit A D analog to digital conversionBuilt in two channel stereo 16 bit D A digital to analog conversionBuilt in 20mW dual channel headphone amplifier outputBuilt in 550mW mono speaker amplifier outputSupport parallel interface or SPI interfaceBuilt in phase locked circuit PLL input master contro